core: Allow specifiying a key origin when importing keys

* src/context.h (struct gpgme_context): New field key_origin.
* src/engine-backend.h (struct engine_ops): Add arg key_origin to
field 'import'.
* src/engine-gpg.c (gpg_import): Add arg key_origin and pass option
--key-origin with argument value to gpg. Adjust all callers.
* src/engine-gpgsm.c (gpgsm_import): Add dummy arg key_origin.
* src/gpgme.c (gpgme_release): Free 'key_origin'.
(gpgme_set_ctx_flag, gpgme_get_ctx_flag): New flag "key-origin".

* tests/run-import.c (main): Add option --key-origin.
* tests/gpg/t-import.c (main): Set and verify key origin.
--

This makes the --key-origin option available in the GPGME API for
key imports.

GnuPG-bug-id: 5733

1 files changed, 12 insertions, 0 deletions

diff --git a/src/gpgme.c b/src/gpgme.c
index 255d1165..2703cd72 100644
--- a/src/gpgme.c
+++ b/src/gpgme.c
@@ -254,6 +254,7 @@ gpgme_release (gpgme_ctx_t ctx)
   free (ctx->auto_key_locate);
   free (ctx->trust_model);
   free (ctx->cert_expire);
+  free (ctx->key_origin);
   _gpgme_engine_info_release (ctx->engine_info);
   ctx->engine_info = NULL;
   DESTROY_LOCK (ctx->lock);
@@ -586,6 +587,13 @@ gpgme_set_ctx_flag (gpgme_ctx_t ctx, const char *name, const char *value)
       if (!ctx->cert_expire)
         err = gpg_error_from_syserror ();
     }
+  else if (!strcmp (name, "key-origin"))
+    {
+      free (ctx->key_origin);
+      ctx->key_origin = strdup (value);
+      if (!ctx->key_origin)
+        err = gpg_error_from_syserror ();
+    }
   else
     err = gpg_error (GPG_ERR_UNKNOWN_NAME);
 
@@ -659,6 +667,10 @@ gpgme_get_ctx_flag (gpgme_ctx_t ctx, const char *name)
     {
       return ctx->cert_expire? ctx->cert_expire : "";
     }
+  else if (!strcmp (name, "key-origin"))
+    {
+      return ctx->key_origin? ctx->key_origin : "";
+    }
   else
     return NULL;
 }